Rotary cutting and scraping device



J. V. LA FONTAlNE ROTARY CUTTING AND SCRAPING DEVICE March 13, 1951 2 Sheets-Sheet 1 Filed Sept. 11, 1946 Josefk Via Fon aine IN V EN TOR.

March 13, 1951 i LA FONTNNE 2,544,841

ROTARY CUTTING AND SCRAPING DEVICE Filed Sept. 11, 1946 2 Sheets-Sheet 2 Jose aj'z V I open 3. a ine INVENTOR.

Patented Mar. 13, 1951 UNI ED S TAT ES PAT ENT F a ROTARY. CU'I IING.- AND SCRAPINGDEVIGE Joseph V. La. Fontaine, Portland, Oreg Application September 11, 1946, Serial-No. 696,264

lGlaima 1.

This invention.relates.to.improvementssin.cutir ting and scraping devices. and more particularly to adevice of thischaracter adapted for. cutting and scraping meatblocks andgthe like.

The principal object of the: invention is the provision of: adevice of. thischaracter in-whioh the cutting head may. be. adjustably moved; and held into and out of contact with the surface being dealt with whereby the depth of the cutting or scraping operation may be varied.

Another object is the provision of a collector surrounding the cutter head and the provision of means for setting up an air flow within the collector for drawing the scrapings or cuttings from the cutter head into the collector, and also the provision of means for arresting the dust within the collector to prevent it from scattering into the atmosphere.

Another object is the provision of a device of this character which is of simple, efiicient, durable and inexpensive construction and wherein the several parts are readily accessible for cleaning or replacement.

These and other objects will appear as my invention is more fully hereinafter described in the h following specification, illustrated in the accompanying drawings, and finally pointed out in the appended claim.

In the drawings:

Figure 1 is a side elevation of the device with parts broken away for convenience of illustration.

Figure 2 is a top plan view of Figure 1 with a fragment broken away.

Figure 3 is a bottom plan view of Figure 1 with a fragment broken away.

Figure 4 is a sectional view taken along the line 4-4 of Figure 2.

Figure 5 is a sectional detail view of a cam abutment.

Referring now more particularly to the draw- Reference numeral I indicates a high speed electric motor connected through a switch 2 with a source of electric energy with a cord 3 and a plug 4. The motor is provided with a handle 5 for convenience of manipulation. One end of the motor is formed with a flange 6 which is apertured at I. Surrounding the motor and rotatable upon the flange 6 is a ring 8 formed with cam surfaces 9. The ring is formed with a plurality of arcuate slots l0. Through each slot and each aperture I, I extend a bolt II whose head end washer I2 bears against its respective cam surface and whose opposite end is provided with a nut I3 bearing against the underside of a cover plate I4 for a casing I5 around the interior surface of which I form an annular channel I6. The housing I5 and. cover plate [4 are handled as a unit and are yieldingly held to the flange 6 by the bolt II with a resilient member, such as a 2 rubber washer llrorsaspringz l8 as;.shown:in;Fig1- ure-5 disposed between the; flangeand the cover plate. ThfizCOl/GIZ plate-is: formedwitlra centrali opening I 9.;and. iszremovably. secured tov thezhousse ing; 4551); means; of bolts Ill].v

The: shaft 21: of the; motor I: extends. downs wardly; into. the, housing; I15 as: shown. and; to its: lower end is secured by any suitable means a rotary cutter head consisting of a disc 22 having formed therein, a plurality of sockets 23 within each of which is provided a cutting blade 24-adjustable as to depth bymeans of an adjusting screw 25 and which may be locked in any adjusted position by means of a set screw 26. Although I have shown only four sockets and cutting blades, it is to be understood that I may use any desired number to increase the cutting area. Between each socket and the hub of the disc I form webs 21 to serve as a rotary fan when the disc is rotated by the motor I. When the cutter head is put into operation the cutting or scrapings from the material bein dealt with is drawn by the air suction created by the webs 2! up through an opening 28 formed in the housing I5 and by centrifugal force is thrown into the annular channel I6, while the air escapes up through the openin I9 in the cover plate and out to the atmosphere.

When the housing I5 is placed flatly against the surface of the meat block or against any other surface being dealt with and in order to allow air to pass beneath the housing l5 and up through the opening 28 I form a plurality of inwardly directed grooves 29.

For regulating the depth of the cutting or scraping operation the ring 8 is rotated with respect to the flange 6 of the motor by means of the finger grip 30. As the ring is moved to the left as viewed inFigure 1 the housing will be drawn upwardly with respect to the cutters 24 to expose or project them the desired distance for the cutting operation.

By rotating the ring 8 in the opposite direction the cutting or scraping operation may be lessened in depth. When the ring is moved to its limit of rotation in said opposite direction the cutters 24 are drawn upwardly into the housing l5 so they will not contact and mutilate any surface the device may be placed upon while the motor is still running with the switch on or idling to a stop with the current cut off.

To remove the casing from the flange I4 it is merely necessary to withdraw the bolts 20 from the casing.

While I have shown a particular form of embodiment of my invention, I am aware that many minor changes therein will readily suggest themselves to others skilled in the art without departing from the spirit and scope of the invention:

I 3 what I claim as new and desire to protect by Letters Patent is:

I claim:

A cutting and scraping device comprising in combination, a motor disposed within a vertically disposed housing flanged at its bottom end, a rotary cutting head secured to the bottom end of the motor shaft, an annular collector casing yieldingly attached to the flange of said motor housing and surrounding said cutter-head, cam means 10 carried by said motor housing flange for raisin or lowering the casing with respect to the cutterhead to regulate the depth of the out thereof, said cam means comprising a ring rotatably mounted on the flange of said motor housin and surrounding said housing, said ring having cam surfaces formed thereon and arcuate openings formed therethrough, bolts extending through said openings in said cam ring, through the motor housing flange and through resilient means interposed between said flange and said casing, and said 'bolts being attached to said collector casing whereby the same may be raised or lowered with respect to said cutter-head upon rotation of the cam ring.

JOSEPH V. LA FONTAINE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 866,074 Schenk Sept. 17, 1907 1,216,340 Mattison. Feb. 20, 1917 1,394,564 Lindgren Oct. 25, 1921 1,580,821 Gevaerts Apr, 13,1926 1,584,078 Carter May 11, 1926 1,652,820 Evans Dec. 13, 1927 1,812,755 Quinsler June 30, 1931 1,899,883 Sacrey Feb. 28, 1933 2,143,970 Blood Jan. 17, 1939 2,411,544 Kehl Nov. 26, 1946 

